Alonzo s



(nodal.)

A. S. APPLBBY.

Lock.

Patenteq May 31, 188|.

LAI

WITN ESSES UNITED STATES PATENT OFFICEC ALONZO S. APPLEBY, OF ASH GROVE, MISSOURI.

LOCK.

SPECIFICATION forming part'of Letters Patent No. 242,099, dated May 31, 1881.

Application filed April 4, 1881.

will enable others skilled in the art to which it appe-rtains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

Figure lis a plan view of my improved lock, the cover being removed, so as to show the construction. Fig. 2 is a sectional view on the line Fig. 1. Fig. 3 is a sectional View on the line y y, Fig. l; and Fig. 4 is a sectional view on the line z z, Fig. 1.

Corresponding parts in the several dgures are denoted by like letters of reference.

This invention relates to lock's for doors, &c. and it consists in certain improvements in the construction of the same, which will be hereinafter fullydescribed, and particularly pointed out in the claim.

In the drawings hereto annexed A represents the case of my improved lock, which is provided with a recess, B, for the verticallysliding bolt or tumbler B', which is provided upon its front side or face with a diagonal groove, C, and some distance above the latter with a pin or stud, D.

E is the lock-plate, which slides in a transverse diagonal recess, F, in the case A, and which is provided with a transverse groove, G, in which works the pin or stud D of tumbler B'.

H H are a set of key-plates iitted in a recess, I, in the case A, adjoining recess B. The said key-plates, which are adjustable and interchangeable, are provided with openings I for the admission of the key, and recesses J to enable the latter to be turned between the several plates, so,as to eventually enter the lock.

The key, which isl shown in the sectional (Model.)

views of the drawings, consists of a stem or shaft, K, having a suitably formed or constructed bit, L, adapted to enter through the suitably constructed and disposed key-plates.

From the foregoing description, taken in connection with the drawings hereto annexed, the operation and advantages of my invention will be readily understood.

The key-plates H may be adjusted or inter changed in any suitable manner, so as to change the combination or the way in which it is necessary to turn the key in order to open the lock. When the key passes through the key-plates it enters the diagonal groove C in the tumbler, and being pushed farther in raises the latter and the lock-plate, thus allowing the door to be opened. When the key is removed the tumbler drops down by its own weight, carrying with it the latch, and thus locking the door.

My improved lock is eminently simple in its construction, and it may be constructed of wood or any other suitable material by any one knowing how to use the Ysimplest tools. When made of Wood, rust and other incidental damage is prevented, and as a lock for the doors of barns, grauaries, and other out-buildings it is exceedingly desirable.

Having thus described my invention, I claim and desire to secure by Letters Patent of the United States'- The combination, with the case A., having gravity-tumbler B', provided with diagonal slot G and stud D, and interchangeable keyplates H H, having openings I and recesses J, ofthe transversely-slotted lock-plateE and key K, as herein described, for the purpose set forth.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in presence of two witnesses.

ALONZO SUSTAN APPLEBY.

Witnesses:

WM. GoMEGYs, S. S. BROWN. 

